Wright Brothers are regarded inventors of the-
Wright Brothers are regarded inventors of the-
Which of the following was the world's worst industrial disaster?
Which of the following was the world's worst industrial disaster?
Fish preathe through—
Fish preathe through—
Decible is unit of-
Decible is unit of-
What is the name given to the respiratory holes on the surface of a leaf?
What is the name given to the respiratory holes on the surface of a leaf?
A universal doner is a person having blood group of—
A universal doner is a person having blood group of—
"To every action there is an equal and oposite reaction"-- this theory has been given by--
"To every action there is an equal and oposite reaction"-- this theory has been given by--
How many days are in a leap year?
How many days are in a leap year?
Which one of the following is not a noble gas?
Which one of the following is not a noble gas?
Nameplates made of brass get discolured in air because of the presence of which of the following gases in the air?
Nameplates made of brass get discolured in air because of the presence of which of the following gases in the air?
Which one of the following is used for bleaching purposes?
Which one of the following is used for bleaching purposes?
Which one of the following gases is predominant in the atmosphere?
Which one of the following gases is predominant in the atmosphere?
Who was the surgeon who pioneered antiseptic surgery in 1865?
Who was the surgeon who pioneered antiseptic surgery in 1865?
How many Dynes are there in one gram weight?
How many Dynes are there in one gram weight?
Which organization of UNO declared prohibition on Clone human chiled?
Which organization of UNO declared prohibition on Clone human chiled?
Diamond and graphite are similar in-
Diamond and graphite are similar in-
On which principle does the tape recorder function?
On which principle does the tape recorder function?
What do scientists beleve global warming is caused by?
What do scientists beleve global warming is caused by?
The center of the earth is known as the—
The center of the earth is known as the—
Which of the following pairs is incorrect?
Which of the following pairs is incorrect?
Ecology deals with-
Ecology deals with-
The scientist who first discovered that the earth revolves round the sun was-
The scientist who first discovered that the earth revolves round the sun was-
Mark the wrong combination—
Mark the wrong combination—
Who invented the miner's safety-lamp?
Who invented the miner's safety-lamp?
The credit of inventing the television goes to-
The credit of inventing the television goes to-
Who among the the following is associated with the invention of computers?
Who among the the following is associated with the invention of computers?
ডুবোজাহাজে কোন যন্ত্রের সাহায্যে পানির নিচ থেকে উপরের দৃশ্য দেখা যায়?
ডুবোজাহাজে কোন যন্ত্রের সাহায্যে পানির নিচ থেকে উপরের দৃশ্য দেখা যায়?
The unit of current is—
The unit of current is—
The household line voltage(in volt) is approximately—
The household line voltage(in volt) is approximately—
Who among following invented the steam engine?
Who among following invented the steam engine?
Choose the correct combination—
Choose the correct combination—
Which among the following is a natural polymer?
Which among the following is a natural polymer?
Which of the following is a renewable source of energy?
Which of the following is a renewable source of energy?
How many legs do butterflies have?
How many legs do butterflies have?
Every atom of Carbon di-oxide contains -- Oxygen and --- Carbon.
Every atom of Carbon di-oxide contains -- Oxygen and --- Carbon.
Numismatics is the study of—
Numismatics is the study of—
বস্তুর ওজন সবচেয়ে বেশি—
বস্তুর ওজন সবচেয়ে বেশি—
The hardness of the bone tissue is due to the phosphates and carbonates of which of the following pairs of elements?
The hardness of the bone tissue is due to the phosphates and carbonates of which of the following pairs of elements?
The Lunar Eclipse occurs when?
The Lunar Eclipse occurs when?
Study of earthquakes is known as—
Study of earthquakes is known as—
Which of these is not a primary color?
Which of these is not a primary color?
Which of the following statements is true?
Which of the following statements is true?
Which of the followings is not a part of milk?
Which of the followings is not a part of milk?
Which of the following is not a part of the human eye?
Which of the following is not a part of the human eye?
What is the acceptable safe limit of Arsenic per liter of water?
What is the acceptable safe limit of Arsenic per liter of water?
In Y2K, K stands for—
In Y2K, K stands for—
Joule is the unit of—
Joule is the unit of—
One liter of water is equivalent to how many kilograms?
One liter of water is equivalent to how many kilograms?
Which of the following sulphur compound is used as a bleaching agent in textile industry?
Which of the following sulphur compound is used as a bleaching agent in textile industry?
Which one is a renewable energy source?
Which one is a renewable energy source?
While functioning what is the temperature level inside a refrigerator?
While functioning what is the temperature level inside a refrigerator?
The Lunar Eclipse occurs when?
The Lunar Eclipse occurs when?
Which of the following is the main source of energy of the sun?
Which of the following is the main source of energy of the sun?
Who developed the small pox vaccination?
Who developed the small pox vaccination?
Which one of the following has the shortest wave length?
Which one of the following has the shortest wave length?
Which one of the following crops requires continuous semi-aquatic condition for cultivation?
Which one of the following crops requires continuous semi-aquatic condition for cultivation?
Marble is a changed form of which of the following?
Marble is a changed form of which of the following?
Which of the following is the working principle of a washing machine?
Which of the following is the working principle of a washing machine?
The telephone was invented by-
The telephone was invented by-
What are elements containing the same number of protons but different number of neutrons called?
What are elements containing the same number of protons but different number of neutrons called?
Which Vitamin do we get from sun ray?
Which Vitamin do we get from sun ray?
The name of the device used in measuring earthquake is-
The name of the device used in measuring earthquake is-
Which of the following soils is very hard to cultivate?
Which of the following soils is very hard to cultivate?
The universal blood group donor is—
The universal blood group donor is—
What is the normal temperature of human body?
What is the normal temperature of human body?
What is the name of earth's moon?
What is the name of earth's moon?
Anopheles mosquito causes which of the following deases?
Anopheles mosquito causes which of the following deases?
The first attempt in printing was made in England by—
The first attempt in printing was made in England by—
Which of the following is not a metal?
Which of the following is not a metal?
The tendency of a liquid drop to assume spherical shape is due to—
The tendency of a liquid drop to assume spherical shape is due to—
Which of the following is not a gas?
Which of the following is not a gas?
Eskimos hunt using a dog-driven vehicle called:
Eskimos hunt using a dog-driven vehicle called:
The name of the strand of virus, known as 'swine flu' virus, that has been declares as a pandemic worldwide is:
The name of the strand of virus, known as 'swine flu' virus, that has been declares as a pandemic worldwide is:
The Chernobyl nuclear accident took place in—
The Chernobyl nuclear accident took place in—
Which one of the following gases is not a greenhouse gas?
Which one of the following gases is not a greenhouse gas?
SMS available in mobile phone stands for—
SMS available in mobile phone stands for—
The velocity of light was measured by—
The velocity of light was measured by—
Which of these is not a planet in the Solar System?
Which of these is not a planet in the Solar System?
Which of the following is a device for storing electric charge?
Which of the following is a device for storing electric charge?
Which one of the following is used for bleaching purposes?
Which one of the following is used for bleaching purposes?
Light year is related to—
Light year is related to—
Nitrogen constitutes nearly- % of the atmosphere.
Nitrogen constitutes nearly- % of the atmosphere.
Centigrade & Farenheit scales give same reading at-
Centigrade & Farenheit scales give same reading at-
The credit of developing the polio vaccine goes to—
The credit of developing the polio vaccine goes to—
What is the correct increasing order of abundance of the main components of air?
What is the correct increasing order of abundance of the main components of air?
Which of the following is necessary for a substance to burn?
Which of the following is necessary for a substance to burn?
Robert Koch worked on—
Robert Koch worked on—
Which one of the following is an air-pollutant present in the atmosphere?
Which one of the following is an air-pollutant present in the atmosphere?
Main cause of night blindness is deficiency of Vitamin-
Main cause of night blindness is deficiency of Vitamin-
The freezing point in farenheit thermometer is:
The freezing point in farenheit thermometer is:
What is the scientific name of Vitamin C?
What is the scientific name of Vitamin C?
HIV AIDS can be spread through—
HIV AIDS can be spread through—
Removal of the top layer of soil/rocks by wind, water is known as-
Removal of the top layer of soil/rocks by wind, water is known as-
Starch is a mixture of—
Starch is a mixture of—
The shortest day is in the month of—
The shortest day is in the month of—
Meteorology is the science of—
Meteorology is the science of—
What are the main constituents of biogas?
What are the main constituents of biogas?
What does Angstrom measure?
What does Angstrom measure?
Who invented the doctor's thermometer?
Who invented the doctor's thermometer?
The Richter scale is used for measuring-
The Richter scale is used for measuring-
